drivers/net/ethernet/marvell/prestera/prestera_pci.c

File Facts

System

Linux kernel

Corpus path

drivers/net/ethernet/marvell/prestera/prestera_pci.c

Extension

.c

Size

24942 bytes

Lines

980

Domain

Driver Families

Bucket

drivers/net

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bitfield.h
• linux/circ_buf.h
• linux/device.h
• linux/firmware.h
• linux/iopoll.h
• linux/kernel.h
• linux/module.h
• linux/pci.h
• prestera.h

Detected Declarations

• struct prestera_fw_header
• struct prestera_ldr_regs
• struct prestera_fw_evtq_regs
• struct prestera_fw_cmdq_regs
• struct prestera_fw_regs
• struct prestera_fw_evtq
• struct prestera_fw_cmdq
• struct prestera_fw
• enum prestera_pci_bar_t
• function prestera_fw_write
• function prestera_fw_read
• function prestera_fw_evtq_len
• function prestera_fw_evtq_avail
• function prestera_fw_evtq_rd_set
• function prestera_fw_evtq_read32
• function prestera_fw_evtq_read_buf
• function prestera_fw_evtq_pick
• function prestera_fw_evt_ctl_status_set
• function prestera_fw_evt_work_fn
• function prestera_fw_wait_reg32
• function prestera_fw_cmdq_lock
• function prestera_fw_cmdq_unlock
• function prestera_fw_cmdq_len
• function prestera_fw_cmd_send
• function prestera_fw_send_req
• function prestera_fw_init
• function prestera_fw_uninit
• function prestera_pci_irq_handler
• function prestera_ldr_write
• function prestera_ldr_read
• function prestera_ldr_wait_reg32
• function prestera_ldr_wait_buf
• function prestera_ldr_wait_dl_finish
• function prestera_ldr_wr_idx_move
• function prestera_ldr_wr_idx_commit
• function prestera_ldr_send
• function prestera_ldr_fw_send
• function prestera_fw_rev_parse
• function prestera_fw_rev_check
• function prestera_fw_hdr_parse
• function prestera_fw_get
• function prestera_fw_put
• function prestera_fw_load
• function prestera_pci_pp_use_bar2
• function prestera_pci_pp_bar2_offs
• function prestera_pci_fw_bar2_offs
• function prestera_pci_probe
• function prestera_pci_remove

Annotated Snippet

static struct pci_driver prestera_pci_driver = {
	.name     = "Prestera DX",
	.id_table = prestera_pci_devices,
	.probe    = prestera_pci_probe,
	.remove   = prestera_pci_remove,
};
module_pci_driver(prestera_pci_driver);

MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Marvell Prestera switch PCI interface");

Annotation

• Immediate include surface: `linux/bitfield.h`, `linux/circ_buf.h`, `linux/device.h`, `linux/firmware.h`, `linux/iopoll.h`, `linux/kernel.h`, `linux/module.h`, `linux/pci.h`.
• Detected declarations: `struct prestera_fw_header`, `struct prestera_ldr_regs`, `struct prestera_fw_evtq_regs`, `struct prestera_fw_cmdq_regs`, `struct prestera_fw_regs`, `struct prestera_fw_evtq`, `struct prestera_fw_cmdq`, `struct prestera_fw`, `enum prestera_pci_bar_t`, `function prestera_fw_write`.
• Atlas domain: Driver Families / drivers/net.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.